Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
Patent
1973-12-03
1976-05-18
Welsh, M. J.
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Tanning
8176, 260 292UA, D06P 152
Patent
active
039574270
ABSTRACT:
In the Thermosol and like processes in which a dye-impregnated textile material is dried prior to fixation, uncontrolled migration of the dye to the surface of the material during the drying operation is obviated by the incorporation of an antimigration additive in the aqueous dye bath liquid, said additive being an amide derivative of poly(vinyl methyl ether/maleic anhydride), said anhydride-containing copolymer having a specific viscosity of about 0.75 to about 4.5, preferably about 1.0 to about 3.5, more preferably about 2.0 to about 3.5, measured at a concentration of 1 gram per 100 ml. of methylethyl ketone at 25.degree.C. The additive, employed within the general range of from about 0.05% to about 0.50% by weight based on the total weight of the dye bath, serves to enhance the uniformity of the dyeing operation and the color properties of the dyed textile material.
REFERENCES:
patent: 2589951 (1952-03-01), Meier
patent: 2800417 (1957-07-01), Kleiner et al.
patent: 3178385 (1965-04-01), Dinges et al.
GAF Corporation
Kehm Walter C.
Ward Joshua J.
Welsh M. J.
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